<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="../unit.css" />
<script type="application/x-javascript" src="../unit.js"></script>
<script type="application/x-javascript" src="../util.js"></script>
<script type="application/x-javascript">

Tests.autorun = false;

Tests.testInterval = function() {
    document.getElementById('dtMax').textContent = "Running, please wait...";
    setTimeout(function() {
        var t0 = new Date().getTime();
        var t = t0;
        var dtMax = 0;
        var frames = [];
        var iv;
        iv = setInterval(function() {
            if (t > t0 + 10000) {
                var hist = [];
                var dtMed = 0, maxi = [0, 0];
                for (var i=0; i<dtMax; i++) hist[i] = 0;
                for (var i=0; i<frames.length; i++)
                    hist[frames[i]]++;
                for (var i=0; i<hist.length; i++)
                    if (hist[i] > maxi[1]) maxi = [i, hist[i]];
                dtMed = maxi[0];
                var dtAvg = frames.reduce(function(s,i){return s + i;})/frames.length;
                document.getElementById('dtMax').textContent = "Longest frame: " + dtMax + " ms. Average frame: " + Math.floor(dtAvg*100)*0.01 + " ms. Median frame: " + dtMed + " ms.";
                clearInterval(iv);
                var c = document.getElementById('dtCanvas');
                c.width = frames.length;
                c.height = dtMax;
                var ctx = c.getContext('2d');
                for (var i=0; i<frames.length; i++)
                    ctx.fillRect(i,0,1,frames[i]);
            }
            var t1 = new Date().getTime();
            if (t1-t > dtMax) dtMax = t1-t;
            frames.push(t1-t);
            t = t1;
            var rot = Matrix.rotate((t/400) % (2*Math.PI), [0, 1+(t%1000), 1]);
            var trans = Matrix.translate3(0, Math.cos(t/1000)*1, Math.sin(t/1000)*3);
            for (var i=0; i<200; i++)
                var mat = Matrix.mul4x4(rot, trans);
        }, 16);
    }, 0);
}

</script>
<style>canvas{ position:absolute; }</style>
</head><body>
<h3>10 seconds of 60fps 200x mul4x4, frame time statistics</h3>
<p id="dtMax"></p>
<canvas id="dtCanvas"></canvas>
</body></html>

